The synthesis and characterization of the pendant-armed ligand N,N′-bis(2′-pyridylmethyl)-1,7-dithia-4,11-diazacyclotetradecane (L4) and crystal structures of L4 and the copper(II) complex

Chak, B. C. M.; McAuley, A.
February 2006
Canadian Journal of Chemistry;Feb2006, Vol. 84 Issue 2, p187
Academic Journal
The synthesis and characterization of the mixed donor ligand N,N′-bis(2′-pyridylmethyl)-1,7-dithia-4,11-diazacyclotetradecane (L4) containing two pendant pyridine arms is described. The macrocycle formation involves reaction of N-tosylbis(2-bromoethyl)amine with N-tosylbis(3-mercaptopropyl)amine at high dilution followed by detosylation at the nitrogen atoms using LiAlH4 in view of the presence of the thioether groups. An X-ray study of the ligand shows the sulphur atoms lie exo to the macrocyclic ring. The nickel(II) and copper(II) complexes of L4 have been characterized and the X-ray structure of the Cu(II) ion exhibits a five-coordinate copper ion despite the presence of six available donor atoms. In the case of ligand N-(2-pyridylmethyl)-1,4,7-trithia-11-azacyclotetradecane (L2), with a single pendant N donor, the Ni(II) complex is distorted octahedral with a molecule of acetonitrile in the sixth site. Details of UV–vis, ESR spectra, and electrochemical studies on the complexes are presented.


Related Articles

  • Structure and redox kinetics of nickel(II) tetraazamacrocycles containing pendant carboxylate groups. Haines, Robert Ivor; Hutchings, Dean Reginald; Lucas, Rhonda Jane; Miller, David // Canadian Journal of Chemistry;Jan2001, Vol. 79 Issue 1, p54 

    The nickel(II) complex of the deprotonated pendant-arm macrocycle 5,12-dimethyl-7,14-diphenyl-1,4,8,11-tetraazacyclotetradecane-4,11-diacetate (L[sup 2] )[sup 2�] has been structurally characterized by X-ray crystallography. The Ni(II)L[sup 2] complex crystallizes in the monoclinic system,...

  • Effect of the type of crystal lattice in nickel(II) and copper(II) macrocyclic carboxylates on absorption of copper amine complexes from solutions. Andriichuk, I. L.; Tsymbal, L. V.; Lampek, Ya. D. // Theoretical & Experimental Chemistry;Jan2010, Vol. 46 Issue 1, p58 

    We have established that crystalline nickel-containing metal�organic frameworks (MOFs) bind the complex [Cu(NH3)4](ClO4)2 from acetonitrile solutions and do not react with [Cu(en)2](ClO4)2. The MOF/copper ammine complex ratio in the products after reaching saturation is determined by the...

  • Interface sharpening in miscible Ni/Cu multilayers studied by atom probe tomography. Balogh, Zoltán; Reda Chellali, Mohammed; Greiwe, Gerd-Hendrik; Schmitz, Guido; Erdélyi, Zoltán // Applied Physics Letters;10/31/2011, Vol. 99 Issue 18, p181902 

    Interfaces of Ni/Cu multilayers were studied by atom probe tomography. To this aim, specimens with sharp or artificially smeared interfaces were prepared and investigated before and after annealing at 773 K. Owing to three-dimensional subnanometer resolution of the atom probe, local chemical...

  • Kinetic Analysis of the Interfacial Reactions in Ni/Sn/Cu Sandwich Structures. Wang, S. J.; Liu, C. Y. // Journal of Electronic Materials;Nov2006, Vol. 35 Issue 11, p1955 

    The mutual interaction between Sn/Ni and Sn/Cu interfacial reactions in a Ni/Sn/Cu sandwich sample has been studied. The major interfacial reaction product on the Cu side was Cu6Sn5, while on the Ni side, a ternary (Cu,Ni)6Sn5 compound layer was formed. We found that the growth kinetics of the...

  • Effect of macrocyclic nickel(II) and copper(II) complexes on the reaction of trypsin with a soybean bioinhibitor. Boltovets, P.; Tsymbal, L.; Snopok, B.; Lampeka, Ya. // Theoretical & Experimental Chemistry;Jul2008, Vol. 44 Issue 4, p260 

    The blocking effect of nickel(II) azamacrocyclic complexes in the biospecific reaction between soybean trypsin inhibitor and trypsin and the absence of such a reaction for related copper(II) complexes were established. The efficiency for inhibition of the formation of the protein adduct was...

  • Thermal Decomposition of Nickel(II) and Copper(II) Hexaaza Macrotricyclic Complexes. SUJATHA, SUBRAMANIAM; BALASUBRAMANIAN, SENGOTTUVELAN; ARUNKUMAR, CHELLAIAH // Asian Journal of Chemistry;2015, Vol. 27 Issue 1, p270 

    The thermal behaviour of nickel(II) and copper(II) hexaaza macrotricyclic complexes was investigated from ambient temperature to 1200 °C under nitrogen atmosphere. The complexes demonstrated good thermal stability and are of greatly determined by the nature of ligand molecule and the counter...

  • Framework materials based on azamacrocyclic complexes of transition metals and carboxylates. Lampeka, Ya. D.; Tsymbal, L. V. // Theoretical & Experimental Chemistry;Nov2004, Vol. 40 Issue 6, p345 

    Published data on the molecular and crystal structure and characteristics of coordination polymers and metal-organic frameworks based on the macrocyclic complexes of transition metals and aromatic carboxylates are analyzed. The prospects for the use of such materials as selective sorbents for...

  • [2+2+2] Cycloaddition Reactions of Macrocyclic Systems Catalyzed by Transition Metals. A Review. Pla-Quintana, Anna; Roglans, Anna // Molecules;Dec2010, Vol. 15 Issue 12, p9230 

    Polyalkyne and enediyne azamacrocycles are prepared from arenesulfonamides and various alkyne and alkene derivatives either under basic or neutral conditions. The new family of macrocyclic substrates is tested in the [2+2+2] cycloaddition reaction. Several catalysts are used for the...

  • Investigations of Cobalt, Nickel, and Copper Diethyldithiocarbamates Using Thermal Lens Spectrometry. Smirnova, A. P.; Chernysh, V. V.; Proskurnin, M. A. // Journal of Analytical Chemistry;May2004, Vol. 59 Issue 5, p424 

    Thermal lens spectrometry was used to study the dissociation kinetics of diethyldithiocarbamate complexes of copper(II), cobalt(III), and nickel(II) as a function of pH in the presence of chloride and sulfate ions. It is shown that, as distinct from conventional spectrophotometric and...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics